| 摘要 |
<p>A slack adjuster of the clearance sensing type for brakes of the type having a running clearance adjustable by controlled rotation of a shaft (52) such as cam actuated brakes. The slack adjuster includes a one-way drive mechanism including a spring clutch (86) wrapped around the ends of a driving shaft (62) and a driven shaft (52) which is adapted to slip when the torque necessary to rotate the driven shaft (52) exceeds a predetermined limit. The surface (138) of the driven shaft under the spring clutch is provided with a deposit (142) of material different from the remainder of the shaft which will improve the wear and/or frictional characteristics of the surface. A shoulder (148) is provided at the end (146) of the surface of the driven shaft closest the driving shaft. </p> |
